Statements (49)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:historical_period
|
| gptkbp:alsoKnownAs |
Hadean Earth
|
| gptkbp:atmosphere |
little or no oxygen
reducing atmosphere rich in ammonia rich in methane rich in water vapor |
| gptkbp:characterizedBy |
absence of life
|
| gptkbp:followedBy |
origin of life
|
| https://www.w3.org/2000/01/rdf-schema#label |
prebiotic Earth
|
| gptkbp:importantExperiment |
gptkb:Miller-Urey_experiment
|
| gptkbp:importantMolecule |
amino acids
nucleotides fatty acids simple hydrocarbons simple sugars |
| gptkbp:importantProcess |
polymerization
abiogenesis chemical evolution self-assembly of protocells |
| gptkbp:majorElement |
gptkb:phosphorus
gptkb:sulfur carbon hydrogen nitrogen oxygen |
| gptkbp:notable_for |
gptkb:panspermia_hypothesis
gptkb:hydrothermal_vent_hypothesis gptkb:primordial_soup |
| gptkbp:period |
before 4 billion years ago
|
| gptkbp:powerSource |
gptkb:volcanic_activity
lightning radioactive decay hydrothermal vents radiation therapy |
| gptkbp:precededBy |
formation of Earth
|
| gptkbp:relatedTo |
origin of life studies
|
| gptkbp:significantEvent |
chemical evolution
formation of oceans |
| gptkbp:studiedBy |
astrobiology
chemistry geology planetary science |
| gptkbp:surface |
high temperatures
frequent meteorite impacts intense volcanism liquid water formation |
| gptkbp:bfsParent |
gptkb:Life_and_Origin_of_Life
|
| gptkbp:bfsLayer |
8
|